Production of purified and humidified fuel gas
Patent 4158680 Issued on June 19, 1979. Estimated Expiration Date: 
July 22, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 22, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 980108 1010044 1140064 1798065 1986529 3445343 3653186 3894133 InventorAssigneeApplicationNo. 05/817951 filed on 07/22/1977US Classes:261/149, Heat exchanger in flow path spaced from contact zones165/60, Gas-liquid contactor261/114.1, Overflow baffles261/151, Recirculating fluid261/155Contact fluid passage surrounds external fluid flow passageExaminersPrimary: Chiesa, Richard L.Attorney, Agent or FirmInternational ClassesF02B 47/00 (20060101)F02B 47/06 (20060101) F02B 47/02 (20060101) AbstractThis is a continuous process for producing a stream of purified and humidified fuel gas which may be burned in a gas turbine to produce mechanical work and electrical energy without contaminating the environment. In the process, a feed stream of raw fuel gas is preferably produced by the partial oxidation of a hydrocarbonaceous fuel with a free-oxygen containing gas, optionally in the presence of a temperature moderator. The raw fuel gas stream is then preferably saturated with water during cooling and cleaning operations. It is then passed in indirect countercurrent heat exchange with a stream of purified fuel gas containing substantially no water. The latter stream was produced by cooling and purifying said raw fuel gas stream. At least a portion of the water which is condensed out of the raw fuel gas during said cooling operation is separated and revaporized into said purified fuel gas stream. The resulting stream of purified and humidified fuel gas may be used as fuel in a gas turbine. Maximum low level heat recovery is achieved in the process along with providing the purified fuel gas stream with additional mass for expansion in the turbine.Field of SearchHeat exchanger in flow path spaced from contact zonesCounter flowing gas and liquid (e.g., absorption or rectification column) Recirculating fluid Heat exchange means at or downstream of contact zone Contact fluid passage surrounds external fluid flow passage Fins or deflectors in contact fluid passage of heat exchanger With heat exchange means for feed fluid INDIRECT INTERCHANGE OR HEAT BETWEEN CONTACT FLUIDS Incoming fluid exchanges heat With fluid at or downstream of contact zone Incoming exchanging fluid is feed gas | |
